From owner-freebsd-stable@freebsd.org Mon Oct 12 07:57:45 2015 Return-Path: Delivered-To: freebsd-stable@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 97826A11100 for ; Mon, 12 Oct 2015 07:57:45 +0000 (UTC) (envelope-from ck-lists@cksoft.de) Received: from mx1.cksoft.de (mx1.cksoft.de [IPv6:2001:67c:24f8:1::25:1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "mx1.cksoft.de", Issuer "CA" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 546B9A68; Mon, 12 Oct 2015 07:57:45 +0000 (UTC) (envelope-from ck-lists@cksoft.de) Received: from m.cksoft.de (m.cksoft.de [212.17.240.75]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.cksoft.de (Postfix) with ESMTPSA id 9B8191E9EB4; Mon, 12 Oct 2015 09:57:40 +0200 (CEST) Received: from amavis.cksoft.de (unknown [IPv6:2a01:170:1110:8001::25:a1]) by m.cksoft.de (Postfix) with ESMTP id 89E19631D0; Mon, 12 Oct 2015 09:56:08 +0200 (CEST) X-Virus-Scanned: amavisd-new at cksoft.de Received: from m.cksoft.de ([IPv6:2a01:170:1110:8001::25:1]) by amavis.cksoft.de (amavis.cksoft.de [IPv6:2a01:170:1110:8001::25:a1]) (amavisd-new, port 10041) with ESMTP id X9toD7sXTRpT; Mon, 12 Oct 2015 09:56:07 +0200 (CEST) Received: from noc1.cksoft.de (noc1.cksoft.de [IPv6:2a01:170:1110:8001::53:1]) by m.cksoft.de (Postfix) with ESMTP id F343162FA4; Mon, 12 Oct 2015 09:56:06 +0200 (CEST) Received: by noc1.cksoft.de (Postfix, from userid 1000) id 727F113BEE; Mon, 12 Oct 2015 09:57:38 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by noc1.cksoft.de (Postfix) with ESMTP id 6B53713BCA; Mon, 12 Oct 2015 09:57:38 +0200 (CEST) Date: Mon, 12 Oct 2015 09:57:38 +0200 (CEST) From: Christian Kratzer X-X-Sender: ck@noc1.cksoft.de Reply-To: Christian Kratzer To: Rick Macklem cc: John Baldwin , freebsd-stable@freebsd.org Subject: Re: smbfs crashes since approx. 10.1-RELEASE In-Reply-To: <358885214.31305796.1444518367048.JavaMail.zimbra@uoguelph.ca> Message-ID: References: <2148690.gx9M0ZzrG1@ralph.baldwin.cx> <3563189.eDHDcCgW5L@ralph.baldwin.cx> <358885214.31305796.1444518367048.JavaMail.zimbra@uoguelph.ca> User-Agent: Alpine 2.20 (BSF 67 2015-01-07) X-Spammer-Kill-Ratio: 75% MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 12 Oct 2015 07:57:45 -0000 Hi Rick, On Sat, 10 Oct 2015, Rick Macklem wrote: > Hi again, > > Attached is a semantically equivalent patch to the one I posted a few > minutes ago, but I think this one is more readable. > > Please let me know if you get it tested, rick the box crashed again tonight with your patch applied. Here's the new crashinfo: panic: Assertion mtx_unowned(m) failed at /usr/src/sys/kern/kern_mutex.c:955 GNU gdb 6.1.1 [FreeBSD] Copyright 2004 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "amd64-marcel-freebsd"... Unread portion of the kernel message buffer: panic: Assertion mtx_unowned(m) failed at /usr/src/sys/kern/kern_mutex.c:955 cpuid = 2 KDB: stack backtrace: #0 0xffffffff80975bb0 at kdb_backtrace+0x60 #1 0xffffffff8093baa6 at vpanic+0x126 #2 0xffffffff8093b979 at kassert_panic+0x139 #3 0xffffffff80921c47 at _mtx_destroy+0x77 #4 0xffffffff81a1c114 at smb_iod_destroy+0xc4 #5 0xffffffff81a12eea at smb_vc_free+0x1a #6 0xffffffff81a13e24 at sdp_trydestroy+0xb4 #7 0xffffffff81a1cb36 at smbfs_unmount+0xd6 #8 0xffffffff809d9e84 at dounmount+0x524 #9 0xffffffff809d9936 at sys_unmount+0x3c6 #10 0xffffffff80d42235 at amd64_syscall+0x265 #11 0xffffffff80d25cfb at Xfast_syscall+0xfb Uptime: 1d21h59m0s Dumping 191 out of 999 MB:..9%..17%..26%..34%..42%..51%..67%..76%..84%..92% Here are the stackframes with line numbers: (kgdb) frame 0 #0 __curthread () at ./machine/pcpu.h:219 219 __asm("movq %%gs:%1,%0" : "=r" (td) (kgdb) frame 1 #1 doadump (textdump=) at /usr/src/sys/kern/kern_shutdown.c:263 263 dumptid = curthread->td_tid; (kgdb) frame 2 #2 0xffffffff8093b5f2 in kern_reboot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:451 451 doadump(TRUE); (kgdb) frame 3 #3 0xffffffff8093bae5 in vpanic (fmt=, ap=) at /usr/src/sys/kern/kern_shutdown.c:758 758 kern_reboot(bootopt); (kgdb) frame 4 #4 0xffffffff8093b979 in kassert_panic (fmt=0xffffffff80e931ef "Assertion %s failed at %s:%d") at /usr/src/sys/kern/kern_shutdown.c:646 646 vpanic(fmt, ap); (kgdb) frame 5 #5 0xffffffff80921c47 in _mtx_destroy (c=0xfffff80002db5490) at /usr/src/sys/kern/kern_mutex.c:955 955 MPASS(mtx_unowned(m)); (kgdb) frame 6 #6 0xffffffff81a1c174 in smb_iod_destroy (iod=0xfffff80002db5400) at /usr/src/sys/modules/smbfs/../../netsmb/smb_iod.c:733 733 smb_sl_destroy(&iod->iod_evlock); (kgdb) frame 7 #7 0xffffffff81a12eea in smb_vc_free (cp=0xfffff80002933000) at /usr/src/sys/modules/smbfs/../../netsmb/smb_conn.c:499 499 smb_iod_destroy(vcp->vc_iod); (kgdb) frame 8 #8 0xffffffff81a13e24 in sdp_trydestroy (sdp=0xfffff80002904140) at /usr/src/sys/modules/smbfs/../../netsmb/smb_dev.c:166 166 smb_vc_rele(vcp, scred); (kgdb) frame 9 #9 0xffffffff81a1cb96 in smbfs_unmount (mp=0xfffff80015226000, mntflags=) at /usr/src/sys/modules/smbfs/../../fs/smbfs/smbfs_vfsops.c:297 297 sdp_trydestroy(dev); (kgdb) frame 10 #10 0xffffffff809d9e84 in dounmount (mp=0xfffff80015226000, flags=134217728, td=0xfffff800151b0940) at /usr/src/sys/kern/vfs_mount.c:1313 1313 error = VFS_UNMOUNT(mp, flags); (kgdb) Let me know if you need anything else from the stackframes. Greetings Christian -- Christian Kratzer CK Software GmbH Email: ck@cksoft.de Wildberger Weg 24/2 Phone: +49 7032 893 997 - 0 D-71126 Gaeufelden Fax: +49 7032 893 997 - 9 HRB 245288, Amtsgericht Stuttgart Mobile: +49 171 1947 843 Geschaeftsfuehrer: Christian Kratzer Web: http://www.cksoft.de/